package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.dto.PasswordEditDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        //  后期需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    //新增员工
    @Override
    public void addEmployee(EmployeeDTO employeedto) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeedto, employee);
        //设置创建时间
//        employee.setCreateTime(LocalDateTime.now());
//        employee.setUpdateTime(LocalDateTime.now());
        //设置帐号状态
        employee.setStatus(StatusConstant.ENABLE);
        //设置默认密码123456使用MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置创建人和修改人
//        employee.setCreateUser(BaseContext.getCurrentId());
//        employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.addEmployee(employee);
    }


    //分页查询员工
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQuerydto) {
        PageHelper.startPage(employeePageQuerydto.getPage(), employeePageQuerydto.getPageSize());
         List<Employee> list= employeeMapper.pageQuery(employeePageQuerydto);
        Page<Employee> page = (Page<Employee>) list;
        return new PageResult(page.getTotal(), page.getResult());
    }

    //启用禁用员工账号
    @Override
    public void startOrStop(Integer status, long id) {
        Employee employee = Employee.builder().id(id).status(status).build();
//        employee.setUpdateTime(LocalDateTime.now());
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        return employeeMapper.getById(id);
    }

    //修改员工信息
    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employeeMapper.update(employee);
    }

    //修改密码
    @Override
    public void updatePassword(PasswordEditDTO passwordEditDTO) {
      Employee employee = Employee.builder().password(DigestUtils.md5DigestAsHex(passwordEditDTO.getNewPassword().getBytes())).id(passwordEditDTO.getEmpId()).build();
       Integer count=employeeMapper.countByMap(employee);
       if(count==0){
           throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
       } else if (count==1) {
           employeeMapper.updatePassword(employee);
       }

    }

}
